Open to senior & lead engineering roles

John Abednego Jilima, Senior Software Engineer · Technical Lead

I build software that moves containers, money and people.

5+ years designing scalable microservices, cloud platforms and data products in Java, C#, Go, TypeScript and Python. Today I'm automating terminal operations at Meridian Port Services in Accra, Ghana. Before that, I built marketplaces, payment and real-time systems for clients from New York to Accra.

John Abednego Jilima, Senior Software Engineer in Accra, Ghana, wearing a green pinstripe suit
John Abednego Jilima Senior SWE · Meridian Port Services Accra GMT
  • TypeScript
  • Java
  • C#
  • Go
  • C++
  • Python
  • React
  • Next.js
  • Node.js
  • Spring Boot
  • ASP.NET Core
  • Django
  • PostgreSQL
  • MongoDB
  • Kafka
  • Redis
  • Docker
  • Kubernetes
  • Terraform
  • AWS
  • Azure
  • GCP
5+

years shipping production software across startups and enterprise

90%

fewer manual interventions after automating gate & yard planning

25%

faster applications from cloud microservices on AWS & GCP

100%

project delivery success rate across freelance engagements

01 About

Engineer by training. Lead by habit.

I'm John Abednego Jilima, a Senior Software Engineer and Technical Lead based in Accra, Ghana. Most colleagues just call me Abednego. I turn messy, high-stakes problems into software that is simple to run and hard to break.

At Meridian Port Services I design high-performance microservices that sit right next to mission-critical terminal systems. Reliability isn't a nice-to-have there: when software stalls, containers stop moving. Before that I scaled cloud services at Modenbo Technologies, shipped real-time dashboards and a 95%-accurate TensorFlow model at Veinverse, and delivered full-stack products for clients across Ghana and the US.

I care about clean architecture, honest code reviews and leaving every team stronger than I found it. I'm happiest when the work spans the whole stack, from the database schema to the last pixel.

Education

  • MSc, Computer Science University of Ghana, Legon
  • BSc, Computer Science University of Ghana, Legon
  • Systems that scale

    Microservices in Java, Go, C#, C++ and Python, wired together with Kafka, Redis and REST/SOAP for mission-critical workloads.

  • Cloud-native delivery

    AWS, Azure and GCP with Docker, Kubernetes, Terraform and CI/CD pipelines that make shipping routine.

  • Data into decisions

    Power BI dashboards, real-time KPI feeds and machine-learning models that turn operational data into action.

  • Teams that level up

    Thorough code reviews, shared engineering standards and mentoring that raise the bar for everyone.

02 Experience

Where I've done the work.

From freelance builds to leading microservice design at a major West African container terminal.

  1. Sep 2024 – Present Now

    Senior Software Engineer · Meridian Port Services (MPS)

    Accra, Ghana

    • Lead the design and implementation of high-performance microservices in C++, Java, Go, Groovy, C#, JavaScript and Python that interface with mission-critical terminal systems.
    • Automated gate and yard planning, cutting manual interventions by 90% and improving container throughput.
    • Built Power BI dashboards that put key operational metrics in front of decision-makers.
    • Java
    • Go
    • C++
    • C#
    • Groovy
    • Python
    • Power BI
  2. Aug 2023 – Aug 2024

    Software Engineer · Modenbo Technologies

    Accra, Ghana

    • Engineered scalable microservices and integrated AWS and GCP services, boosting application performance by 25%.
    • Led technical discussions on system design and optimisation, and mentored junior developers through code reviews.
    • Microservices
    • AWS
    • GCP
    • Django
    • React
    • System design
  3. Jul 2022 – May 2023

    Software Engineer · Veinverse

    Accra, Ghana

    • Built React dashboards that stream real-time port KPI data through web APIs.
    • Helped design and refine a TensorFlow machine-learning model that reached 95% accuracy.
    • React
    • REST APIs
    • TensorFlow
    • Data viz
  4. Jan 2022 – Jun 2022

    Full Stack Developer, Contract · Sidakye

    New York, USA

    • Developed a real-time chat application with React and Node.js, running with 100% uptime.
    • Ran regular code-review sessions that improved code efficiency by 10%, and coached junior team members.
    • React
    • Node.js
    • Real-time
    • Code review
  5. Jan 2021 – Jan 2022

    Freelance Software Engineer · Upwork

    Remote

    • Designed, built and maintained full-stack products with a 100% project delivery success rate.
    • Worked directly with stakeholders to define scalable architectures on React, Node.js and cloud services.
    • React
    • Node.js
    • MongoDB
    • Cloud

03 Selected work

Things I've designed, built and shipped.

A few products I'm proud of, from a multi-jurisdiction tax engine to hand-tracking in the browser.

TaxPedestal, a cross-border invoicing and tax engine built by John Abednego Jilima with TypeScript, React and Node.js

FlagshipIn active development

TaxPedestal

Invoice anywhere. Get the tax right.

Cross-border invoicing for freelancers and small businesses. A pluggable tax engine works out the correct tax for each line across 53 jurisdictions, covering reverse charge, EU OSS, US sourcing and India's IGST, then collects payment by card, wallet or African mobile money.

  • 53tax jurisdictions
  • 2payment rails: Stripe & Paystack
  • 241/241tests passing
  • TypeScript
  • React
  • Vite
  • Node.js
  • Express
  • MongoDB
  • Docker
VacVault luggage storage platform built by John Abednego Jilima with React, Node.js, MongoDB and AWS

Travel · Full-stack

VacVault

A travel platform for booking secure luggage storage, with flexible durations, real-time monitoring and smooth drop-off and pick-up flows.

  • React
  • Redux Toolkit
  • Node.js
  • MongoDB
  • AWS
ResiRelief accommodation marketplace built by John Abednego Jilima with React, Node.js and MongoDB

Client · ResiRelief

ResiRelief

An accommodation marketplace connecting travellers with hostels, apartments, hotels and guest houses, with booking APIs serving web and mobile.

  • React
  • Node.js
  • Tailwind CSS
  • MongoDB
Goodifly peer-to-peer flight delivery platform built with React, Django and PostgreSQL

Built at Modenbo Technologies

Goodifly

Turns spare luggage space into a delivery network: travellers list available kilos on upcoming flights and senders book them to move items across borders.

  • React
  • Django
  • PostgreSQL
HoloCraft air-drawing web app with MediaPipe hand tracking, built by John Abednego Jilima

Computer vision · Experiment

HoloCraft

Draw in the air with your bare hand. MediaPipe tracks 21 hand landmarks in real time, and gestures switch between drawing, erasing and picking colours.

  • JavaScript
  • MediaPipe
  • Canvas API

More things I've built

13 projects
  • Jilicon MeetOpen source

    Video meetings with screen sharing, recordings, roles and permissions.

    Next.js · TypeScript · Stream SDK · Clerk

  • SprintSyncInternal tool

    Lets engineers log work, track time and lean on AI for quick sprint planning.

    React · Express · MongoDB · JWT · Docker

  • HDG Video CallClient · Health Direct Global

    Browser video-call app for scheduling and joining remote appointments.

    React · Socket.io · Express · Tailwind

  • GPHA Asset TrackingPorts & harbours

    Asset-tracking dashboard prototype for Ghana Ports & Harbours Authority.

    React · Material UI · ApexCharts

  • Essence ShopOpen source

    Fragrance e-commerce storefront with cart, wishlist and product filters.

    React · React Router · Context API

  • Quick Resume BuilderOpen source

    Assemble a professional resume in a few steps and export it to PDF.

    React · Chakra UI · Bootstrap

  • Cloudflare AssessmentFor Cloudflare

    Solution to Cloudflare's engineering challenge, with interactive data charts.

    React · Chart libraries · Tailwind

  • The BubbleClient · Sidakye

    Front end for a real-estate investment and facilitation platform.

    React · Tailwind CSS

  • GrilliOpen source

    Fully responsive restaurant website with rich animations.

    HTML · CSS · JavaScript

  • CoinMoonOpen source

    Live cryptocurrency tracker that keeps investors on top of the market.

    React · REST APIs · Tailwind

  • Kaitin RestaurantClient · Kaitin

    Contactless online food-ordering template for restaurants.

    HTML · CSS · JavaScript

  • Hostel Report TrackerClient · ARAM

    Lets hostel residents lodge complaints and track how they're resolved.

    HTML · CSS · JavaScript

  • COVID-19 TrackerOpen source

    Country-by-country view of COVID-19 cases, recoveries and deaths.

    React · Tailwind CSS

100+ repositories on GitHub

04 Skills

A toolbox built for the whole stack.

I pick the tool for the problem, not the other way around. Day to day that means Java and Spring Boot, C# and .NET, Go, TypeScript with React, Next.js and Node.js, and Python, shipped to AWS, Azure and GCP with Docker, Kubernetes and Terraform.

Languages

  • Java
  • C#
  • Go
  • C++
  • TypeScript
  • JavaScript
  • Python
  • Kotlin
  • Swift
  • Rust
  • Groovy

Frameworks & runtimes

  • Spring Boot
  • .NET / ASP.NET Core
  • Node.js
  • Express
  • React
  • Redux
  • Next.js
  • React Native
  • Flutter
  • Django
  • Flask
  • HTML5 & CSS3
  • Tailwind CSS

Data & integration

  • PostgreSQL
  • Oracle
  • SQL
  • MongoDB
  • NoSQL
  • Redis
  • Kafka
  • REST APIs
  • SOAP
  • WebSockets / Socket.io
  • Message queues
  • Webhooks
  • Power BI
  • TensorFlow

Cloud & DevOps

  • AWS
  • Azure
  • GCP
  • Docker
  • Kubernetes
  • Terraform
  • CI/CD pipelines
  • Vercel
  • Netlify

Practices & tools

  • Microservices architecture
  • System design
  • API design
  • Technical leadership
  • Code review & mentoring
  • Agile & Scrum
  • Unit & integration testing
  • Git & GitHub
  • Stripe & Paystack payments
  • Machine learning
  • Computer vision (MediaPipe)

05 Kind words

What people say about working with me.

John Abednego is a crazy guy! I love the energy and enthusiasm he brings to every task. Working with him has been profitable and genuinely fun. He is an amazing developer!
Michael OdjidjaCEO, Veinverse
Abednego designs and builds systems that solve real-world problems, and he works closely with stakeholders to clarify requirements. I love his hard work and his skills.
Mr. FredCEO, ResiRelief
The crazy stuff Abednego does alone makes me wonder if he is a robot. He finds a solution when there seems to be none.
Abraham ForkuoFull-Stack Developer
Abednego is the whole package. With JavaScript and its frameworks especially, you just can't compete with him. Have a React project? Look no further!
Melvin AkpaluSoftware Developer
Abednego is a brilliant software engineer! He always meets his deadlines and is very hardworking, the most awesome developer I've ever met.
Micheal OtuBackend Developer
A brilliant software engineer, and I was so excited to meet him! He makes time for his work and delivers it perfectly. Look out for him when you're searching for developers.
Samuel A. AbbeyAdministrative Officer, N&MC Ghana

06 Contact

Let's build something that lasts.

Hiring for a senior or lead role, need a technical partner for a product, or just want to talk architecture? My inbox is open.

What's this about?

Goes straight to my inbox, and I'll reply to the email address you give.

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